I'll modify my statement now that I've played most of the day. It's addictive, but it's also getting frustrating. The missions are getting harder, and I can't seem to get ahead of the curve. If I was playing co-op, it would probably help. I also keep spending too much money replenishing my ammo and health packs, and the really good items cost a ton. Also, I spent a lot of skill points upgrading my turret's firing power, but even maxed out it's not all that effective anymore. I suppose it does still distract some of the enemies when there are a ton of them, but it would be nice if it was dealing greater damage. I can pay to reset and reassign all of my skill points, but that costs a lot, too. Respawning also costs money, so yeah, there are always things keeping me from getting the best items available.

I don't really know where the story is going. So far it's just a bunch of missions with no discernible connection, but there's a Cortana-like female presence who communicates every once in a while, so I know it's going somewhere.

My character is only up to level 16. My nephew is at level 32. He and my brother-in-law have been playing it a lot, I guess, and it sounds like they're getting as frustrated as I am. Here's hoping we find ways to make it easier.